Window ventilator



April 7, 1925.

J. 5. M KENZIE WINDOW VENTILATOR Filed Aug. 1923 attorney Patented Apr. 7, 1925.

UNITED STATES JOHN S. MACKENZIE, OF DELAWARE, OHIO.

WINDOW VENTILATOR.

Application filed August 1, 1923. Serial No. 655,120.

To all whom it may concern:

Be it known that I, JOHN S. MACKENZIE, a citizen of the United States, residing at Delaware, in the county of Delaware and State of Ohio, have invented certain new and useful Improvements in Window Ventilators, of which the following is a specification.

The present invention is directed to improvements in window ventilators.

An object of the invention is to provide a ventilator wherein the slats can be ;conveniently adjusted to regulate the passage of fresh air through the ventilator, novel means being provided to hold the slats in selected adjusted positions.

With this and other objects in view, as will appear as the description proceeds, the invention consists in the novel features of eontruction, combinations of elements and arrangements of parts, and hereinafter to be fully described and pointed out in the appended claim.

In the accompanying drawing:

Figure 1 is a fragmentary view of a window frame equipped with the invention,

Figure 2 is a sectional view on the line 2-2 of Figure 1, v

Figure 3 is a sectional view on the line 33 of Figure 1, V V

Figure 4 is an enlarged detail vertical sectional view through the device, and

Figure 5 is a fragmentary top plan view showing the locking means. 7

Referring to the drawing 1 designates a section of a window frame and 2 the lower sash, both of which being of the usual construction;

The ventilator consists of a pair of hingedly connected sections 33, and since the sections are identical in construction the description of one will sufiice for both. The section consists of top and bottom tubular metallic rails t and 5, respectively, and connecting end rails 6 and 7, the top rail having a vertical flange 8 for engagement with the lower rail of the window sash 2, as clearly shown in Figure 2 of the. drawing. and have their ends provided with pintles 10, said pintles being journaled in the end rails 6 and 7 of the section, whereby the slats can be operated to regulate or entirely out off the passage of air.

A plurality of slats 9 are provided Pivotally connected to the slats 9, as at- 11 is a vertically disposed rod 12 having an intermediate handle 13, said handle serving to permit the rod to be conveniently manipulated to actuate the slats. This rod has its upper end provided with a plurality of grooves 14, said upper end being operable in a slot 15 formed in the plate 16 associated with the upper rail 4. A resilient finger 17 is provided and has one end secured to the plate 16, said finger being normally engaged with the upper end of the rod 12, whereby the linger will be capable of selectively engaging the grooves 14: to hold the rod 12, and thus the slats 9 in selected adjusted positions.

To prevent insects entering the room equipped with the ventilator a sheet of screen 18 is suitably secured to the outer sides of the rails and 5 and 6 and 7.

The rails 6-6 of the respective sections are connected by hinges 19 which are located eXt-eriorly of the rails so that the ventilator in its entirety can not be removed from the window frame as long as the lower rails 5 thereof are engaged with the ledge 20 of the window frame 1 and the sash 2 is engaged with the upper rails l. However, when it is desired to remove the ventilator the sash 2 is elevated and the sections raised sufficiently to clear the ledge 20, whereupon the ventilator can be removed upon breaking the hinge connection inwardly.

It will be of course understood that when the slats are in their closed position thatthey will be in such angle that rain water will be positively prevented from entering the ventilator and thus the room.

What is claimed is:

The combination with a frame, of a plurality of slats pivotally supported thereby, a plate associated with the upper rail of the frame, a spring finger having one end fixed to the plate, a rod pivotally connected with the slats, said rod having vertically spaced grooves in its upper end adapted to be yieldably engaged by the finger to hold the rods and thus the slats in selected adjusted posi tions.

In testimony whereof I aflix my signature.

JOHN s. MAoKENZIE,

ice 

